842P - Clinical outcomes in patients (p) with metastatic renal cell carcinoma (mRCC) receiving several lines of target therapy: Retrospective analyses of...

Date 27 September 2014
Event ESMO 2014
Session Poster Display session
Topics Anti-Cancer Agents & Biologic Therapy
Renal Cell Cancer
Presenter Maria Jové Casulleras
Citation Annals of Oncology (2014) 25 (suppl_4): iv280-iv304. 10.1093/annonc/mdu337
Authors M. Jové Casulleras1, O. Etxaniz2, N. Sala Gonzalez3, A. Font2, L. Jimenez1, S. Recalde1, M. Saigi1, V. Navarro Perez1, P. Barretina3, M. Ochoa de Olza Amat1, X. Garcia Del Muro1
  • 1Medical Oncology, Institut Català d’Oncologia de l’Hospitalet de Llobregat (ICO), Barcelona., 08907 - Hospitalet de Llobregat/ES
  • 2Medical Oncology, Catalan Institute of Oncology ICO Badalona Hospital Germans Trias i Pujol, Medical Oncology, 08916 - Badalona/ES
  • 3Medical Oncology, ICO Josep Trueta, Girona - Girona/ES

Abstract

Aim

New targeted therapeutics approved for mRCC offer multiple options in each line (L) of treatment (tto). Approximately 10-15% of mRCC p are treated with a 3rd L target agent. However, there are few data about which is the most appropriate strategy in the sequential tto in these p. Our aim is to analyze the efficacy of these strategies in terms of overall survival (OS).

Methods

P diagnosed with mRCC from January 2005 to December 2013 in 3 multidisciplinary centres of Spain were retrospectively studied. Therapies were classified as: vascular endothelial growth factor receptor inhibitors (VEGFi) or mamaliam target of rapamycin inhibitors (mTORi). P were classified into subgroups depending on which strategy of tto they received: VEGFi-VEGFi-VEGFi, VEGFi-mTOR-VEGFi or VEGFi-VEGFi-mTOR. Analyses OS curve and medians were estimated using Kaplan Meier Method.

Results

279p were diagnosed with mRCC. P characteristics were: mean age 61.07y; 69.5% males, 29% females; Histology: 79.2% Clear Cell (CC), 7.2% Papilar, 3.2% Chromophob, 7.2% others; Prognosis: 13.6% poor, 49.1% Intermediate, 34.1% Good; 76.3% Prior nephrectomy. 97.5% (272p) of p received at least 1L of tto, 40% (109p) 2nd L and 16.5% (45p) 3rd L. 78.37% of p from the group of VEGFi-VEGFi tto recived a 3rd L (27% VEGFi and 51% mTORi) in front of 56% from VEGFi-mTOR (all VEGFi as 3rd L). OS of all p was 25 months (m) 95%CI(17.8-32.23). OS from p who only recived 2nd L were: VEGFi-mTOR 20m 95%CI(4.63-35.38); VEGFi-VEGFi 32m 95%CI(8.67-55.33). OS for 3rd L of tto were: VEGFi-mTOR-VEGFi 35m 95%CI(15.05-54.95); VEGFi-VEGFi-mTOR 30m 95%CI(19.37-40.68); VEGFi-VEGFi-VEGFi not reached.

Conclusions

Results suggest that sequence with VEGFi has a trend in better outcomes: median OS has not been reached in VEGFi-VEGFi-VEGFi subgroup at the time of analyses and OS from 3rd L subgroups treated with an mTORi was similar than p receiving only 2nd L with two VEGFi. However, the study is limited by unbalanced factors and small number of p. More details of p characteristics subgroups will be provided.

Disclosure

All authors have declared no conflicts of interest.